Fits 1955-2002 Chevrolet 262-400 Gen I Small Block and 1965-2000 Chevrolet 396-502 Big Block, 1979-1992 Mopar 318/360 LA Small Block and 1992-2003 Mopar 3.9L/5.2L/5.9L Magnum. Edge molded rubber water outlet gasket is reusable, great for engines that require regular disassembling for maintenance.